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QuestionRe: How to limit cin to string? Pin
David Crow12-Nov-08 3:11
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QuestionImport file content Pin
john563211-Nov-08 19:11
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AnswerRe: Import file content Pin
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AnswerRe: Import file content Pin
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AnswerRe: Import file content Pin
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QuestionFile Path from handle Pin
revanth198511-Nov-08 18:48
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AnswerRe: File Path from handle Pin
ThatsAlok11-Nov-08 20:57
ThatsAlok11-Nov-08 20:57 
AnswerRe: File Path from handle Pin
Randor 11-Nov-08 22:47
professional Randor 11-Nov-08 22:47 
If you are asking how to get the filename of an executable by knowing a window handle then this is how you do it. This code will tell you the PID of the executable even if you pass a child handle such as a button handle.

#pragma comment(lib, "psapi")
DWORD dwPID = -1;

BOOL CALLBACK EnumChildWindowsProc(HWND hWnd, LPARAM lParam)
{
	if(hWnd == (HWND)lParam)
	{
		GetWindowThreadProcessId(hWnd,&dwPID);
	}
	return TRUE;
}


BOOL CALLBACK EnumWindowsProc(HWND hWnd, LPARAM lParam)
{
	if(hWnd == (HWND)lParam)
	{
		GetWindowThreadProcessId(hWnd,&dwPID);
	}
	else
	{
		EnumChildWindows(hWnd,EnumChildWindowsProc,lParam);
	}
	return TRUE;
}


BOOL FindWindowProcessModule(HWND Hwnd, TCHAR *szName,size_t iMaxLen)
{
	EnumWindows(EnumWindowsProc,(LPARAM)Hwnd);
	if(-1 != dwPID)
	{
		HMODULE hModule = NULL;
		DWORD dwNeeded = NULL;
		HANDLE hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ,FALSE,dwPID);
		if (NULL != hProcess)
		{
			if(EnumProcessModules(hProcess,&hModule,sizeof(hModule),&dwNeeded))
			{
				GetModuleFileNameEx(hProcess,hModule,szName,iMaxLen);
			}
			else
			{
				GetProcessImageFileName(hProcess,szName,iMaxLen);
			}
			CloseHandle(hProcess);
		}
	}
	return NULL != szName[0];
}


Here is how you would use it:

TCHAR szName[MAX_PATH] = {0};
HWND Hwnd = (HWND)::FindWindow(_T("SciCalc"),_T("Calculator"));

if(FindWindowProcessModule(Hwnd,szName,MAX_PATH))
{
	MessageBox(szName);
}
else
{
	MessageBox(_T("Calculator is not running."));
}


Best Wishes,
-David Delaune
GeneralRe: File Path from handle Pin
revanth198511-Nov-08 23:17
revanth198511-Nov-08 23:17 
GeneralRe: File Path from handle Pin
Randor 11-Nov-08 23:31
professional Randor 11-Nov-08 23:31 
GeneralRe: File Path from handle Pin
revanth198511-Nov-08 23:43
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GeneralRe: File Path from handle Pin
SRKSHOME12-Nov-08 0:47
SRKSHOME12-Nov-08 0:47 
QuestionRe: File Path from handle Pin
David Crow12-Nov-08 3:15
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GeneralRe: File Path from handle Pin
Randor 12-Nov-08 1:21
professional Randor 12-Nov-08 1:21 
QuestionCPU stimulation C++ Pin
124211-Nov-08 18:46
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AnswerRe: CPU stimulation C++ Pin
David Crow12-Nov-08 3:35
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GeneralRe: CPU stimulation C++ Pin
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QuestionProblem with IDispatch::GetTypeInfo Pin
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QuestionConvert doc/txt file to PDF using C++. Pin
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AnswerRe: Convert doc/txt file to PDF using C++. Pin
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GeneralRe: Convert doc/txt file to PDF using C++. Pin
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GeneralRe: Convert doc/txt file to PDF using C++. Pin
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AnswerRe: Convert doc/txt file to PDF using C++. Pin
Cedric Moonen11-Nov-08 20:32
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QuestionHow to pass data from MFC to Win 32 Console through windows messaging [modified] Pin
Darrel Q Pham11-Nov-08 15:45
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